Ultraviolet is often used in the bonding, printing and coating of Optical Media discs and other electronics.
DVDs are created by bonding two optical disks together using Ultraviolet curable adhesives, then dried using ultraviolet radiation.
It is normal for optical media like CDs and DVDs to have some form of decoration printed on the non-data side. Often screen inks that are cureable by ultraviolet radiation are used for this purpose. Most screen inks are developed for a longer wavelength (365nm) for the most effective cure and accomplished adhesion — so high irradiance is essential.
Ultraviolet coatings offer superior abrasion and scratch resistance, and are often used to protect the data side of optical media discs. The application of the coating is usually done by a dispense-and-spin (spincoat) technique, followed by exposure to a UV lamp.